This is mostly relevant to DTAs. There are two ways to make an extended test.The normal way gives you a number to draws equal to your base pool (Attribute + Skill + Specialty) at which point your character has tried everything they can figure out to try and can test no longer. The other limit is, naturally, time. You can't do a month worth of work in two weeks. These cost you one DTA for all the tests occurring between a given set of game sessions.The second method is to work Slow and Steady. When working this way your character is taking allot of extra time and effort to cover all their basses. There is no limit on the number of tests one can make this way save time. However the effort required causes these tests to take one DTA per draw in the extended challenge.

It would be nice if people could specify which way that are attempting things when submitting DTAs. In general I assume the first but sometimes it's ambiguous.